Supercritical Water Oxidation Vessels
Roben, Mfg, Inc. engineers and fabricates supercritical water oxidation (SCWO) vessels for advanced waste destruction and chemical processing applications. Our SCWO vessels feature specialized materials and designs for operating above water’s critical point (705°F, 3200 psi) where organic compounds are completely oxidized in a homogeneous supercritical phase.
What Are Supercritical Water Oxidation Vessels?
Supercritical water oxidation vessels are high-pressure, high-temperature reactors operating above water’s critical point where water becomes a powerful solvent and oxidation medium. These vessels enable complete destruction of organic wastes and hazardous materials through oxidation in supercritical water, producing clean effluents of water, carbon dioxide, and mineral salts.
Why Choose Supercritical Water Oxidation Vessels from Roben Mfg?
- Complete organic destruction
- Clean effluent production
- Compact process footprint
- Minimal air emissions
- Energy recovery potential
- Regulatory compliance support
- Hazardous waste destruction
Key Features
- High-pressure/high-temperature construction
- Corrosion-resistant alloys
- Internal liner systems
- Thermal management design
- Salt handling provisions
- Pressure letdown systems
- ASME code construction
- Complete safety systems
Applications
- Hazardous waste destruction
- Military waste disposal
- Industrial wastewater
- Pharmaceutical waste
- Chemical weapons destruction
- PCB destruction
- Sewage sludge processing
- Chemical synthesis
Compliance and Certifications
Roben Mfg maintains comprehensive certifications ensuring our high temperature pressure vessels meet the highest industry standards:
- ASME Section VIII Division 1 and Division 2 – “U” and “U2” Stamps
- National Board “R” Stamp for repairs and alterations
- API standards compliance (API 934, API 941, API 579)
- ASME Section III for nuclear applications (N-Stamp)
- PED (Pressure Equipment Directive) for European market
- CRN (Canadian Registration Number) for Canadian provinces
Quality Assurance and High-Temperature Fabrication
Every high temperature pressure vessel fabricated by Roben Mfg undergoes rigorous quality assurance protocols:
- High-temperature material certifications with complete traceability
- Qualified high-temperature welding procedures and welders
- Post-weld heat treatment (PWHT) per code requirements
- Comprehensive NDE including RT, UT, MT, and PT
- Hydrostatic and pneumatic testing per ASME requirements
- Complete documentation packages supporting high-temperature service
Frequently Asked Questions
What materials withstand SCWO operating conditions?
SCWO vessels use high-nickel alloys (Inconel 625, Hastelloy C-276) and titanium for corrosion resistance in supercritical water. Liner systems protect vessel shells from the extremely corrosive SCWO environment where even these alloys experience accelerated attack. Regular liner replacement may be part of the operating strategy.
How is corrosion managed in supercritical water oxidation vessels?
SCWO corrosion is managed through material selection, liner systems, transpiring wall designs that protect walls with clean water flow, and designs that keep corrosive species away from pressure-bearing materials. Corrosion monitoring and regular inspection are integral to SCWO vessel operation.
What pressures and temperatures do SCWO vessels operate at?
SCWO requires conditions above water’s critical point: temperatures of 750-1200°F and pressures of 3500-4500 psi are typical. We design vessels for these extreme combined conditions with appropriate safety factors and materials qualified for the specific operating envelope.
Contact Roben Mfg
Contact Roben Mfg today to discuss your supercritical water oxidation vessels requirements. Our engineering team provides expert consultation on high-temperature materials, design optimization, and complete vessel solutions.
Phone: (281) 441-4088
Email: info@robenmfg.com
Website: www.robenmfg.com
